3-1MOTION IN APLANE3Answers to Multiple-Choice Problems1. B2.A3. C4. C5.A6. B7. B8.A9. C10. C11.A12. C13. D14. B15. D16. B17. BSolutions to Problems3.1.Set Up:Since distances are given in km, use as units for velocity.Solve: (a)(b)and its components are shown in Figure 3.1.Figure 3.1and below the axis.3.2.Set Up:Since the velocity is expressed in units of and the time interval is in seconds, it is convenient toexpress the acceleration in mixed units of Solve: (a)(b)and its components are shown in Figure 3.2.Figure 3.2and below the 1x-axis.f 513.2°,tanf 51vy2av1vx2avaav5"1ax2av211ay2av25820 km

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